36 lines
1.1 KiB
Nim
36 lines
1.1 KiB
Nim
# SPDX-FileCopyrightText: ☭ Emery Hemingway
|
|
# SPDX-License-Identifier: Unlicense
|
|
|
|
import std/[asyncdispatch, monotimes, times]
|
|
import preserves
|
|
import syndicate
|
|
|
|
import ../protocols/timer
|
|
from syndicate/protocols/dataspace import Observe
|
|
|
|
export timer
|
|
|
|
type Observe = dataspace.Observe
|
|
|
|
proc now: float64 = getTime().toUnixFloat()
|
|
|
|
proc spawnTimers*(turn: var Turn; ds: Cap): Actor {.discardable.} =
|
|
## Spawn a timer actor.
|
|
spawn("timer", turn) do (turn: var Turn):
|
|
|
|
during(turn, ds, inject(grab Observe(pattern: dropType LaterThan), {0: grabLit()})) do (seconds: float):
|
|
let period = seconds - now()
|
|
if period < 0.001:
|
|
discard publish(turn, ds, LaterThan(seconds: seconds))
|
|
else:
|
|
addCallback(sleepAsync(period * 1_000), turn) do (turn: var Turn):
|
|
discard publish(turn, ds, LaterThan(seconds: seconds))
|
|
|
|
proc after*(turn: var Turn; ds: Cap; dur: Duration; act: TurnAction) =
|
|
## Execute `act` after some duration of time.
|
|
let later = now() + dur.inMilliseconds.float64 * 1_000.0
|
|
onPublish(turn, ds, grab LaterThan(seconds: later)):
|
|
act(turn)
|
|
|
|
# TODO: periodic timer
|